PARASITOLOGICAL ANALYSIS OF Lactuca sativa CULTIVATED WITH DIFFERENT ORGANIC FERTILIZERS
Keywords:
Lactuca sativa, Lettuce, Organic FertilizersAbstract
Lettuce is commonly consumed in Brazil. It is mainly eaten in natura, and this is the reason why it is a vehicle of parasitic contamination. The objective of this work was to evaluate the parasitic contamination of three different organic fertilizers - filter cake (TF), manipueira (MA), and agricultural byproduct (RA) -, in Lactuca sativa cv. Valentina samples, using the following applications: TF/T1: no fertilizer, TF/T2: 3.6kg/m², and TF/T3: 7.2kg/m²; MA/T1: no fertilizer, MA/T2: 4.32L/m², and MA/T3: 8.64L/m²; and RA/T1: no fertilizer, RA /T2: 3.6 kg / m², and RA/T3: 7.2 kg/m². The leaves and capsules used in the research were washed with a 0.5% neutral detergent solution and these samples were subjected to Hoffman’s and Faust’s methods. The results of the analyses demonstrated that 100% of the samples were contaminated with Ancilostomydae larvae regardless of the fertilizer or concentration used. Ancilostomydae larvae were only found with the following specifications: TF/T1 (83.33%), TF/T2 (66.66%), TF/T3 (50%), MA/T1 (66.66%), MA/T2 (83.33%), MA/T3 (33.33%), RA/T1 (80%), RA/T2 (60%), and RA/T3 (40.00%). Ancilostomydae larvae associated with Ancilostomydae eggs were found with TF/T1 (0%), TF/T2 (16.66%), TF/T3 (0%), MA/T1 (16.66%), MA/T2 (0%), MA/T3 (0%), RA/T1 (0%), RA/T2 (0%), and RA/T3 (0%). And Ancilostomydae larvae associated with Taenia eggs were found with TF/T1 (16.66%) TF/T2 (16.66%), TF/T3 (50%), MA/T1 (16.66%), MA/T2 (16.66%), MA/T3 (66.66%), RA/T1 (20%), RA/T2 (40%), and RA/T3 (60%). Considering the research results, we reinforce the need for sanitizing and controlling the means of contamination in vegetables grown for sale and consumed in natura to prevent parasitic infection in consumers.
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I declare/we declare that the text submitted here is original, of my own authorship and does not infringe any type of third party rights. The content is my/our sole responsibility. Possible research involving animals and/or human beings is in accordance with Resolution 196/96 of the National Health Council and its complements. I declare that I am/we are in possession of the written consent of patients and that the research and its procedures were timely and adequately approved by the Ethics Committee of the institution of origin. We further declare that all institutional affiliations and all sources of financial support for the work are duly informed. I certify that there is no commercial or associative interest that represents a conflict of interest related to the submitted work. If there is commercial interest, in addition to the technical and academic ones, in the publication of the article, the information will be reported during the text.
